import React, { Component } from 'react';
import { Link, BrowserRouter, Route } from 'react-router-dom';

import Home from './components/Home';
import About from './components/About';

export default class App extends Component {
    
    render() {
        // const {users} = this.state
        return (
            <div>
                <div className="row">
                    <div className="col-xs-offset-2 col-xs-8">
                        <div className="page-header"><h2>React Router Demo</h2></div>
                    </div>
                </div>
                    <div className="row">
                        <div className="col-xs-2 col-xs-offset-2">
                            <div className="list-group">
                                {/* 原生html靠<a>跳转页面
                                    <a className="list-group-item active" href="./about.html">About</a>
                                    <a className="list-group-item" href="./home.html">Home</a> 
                                */}

                                {/* react中靠路由链接切组件，编写路由链接 */}
                                <Link className="list-group-item active" to="/about">About</Link>
                                <Link className="list-group-item" to="/home">Home</Link>
                            </div>
                        </div>
                        <div className="col-xs-6">
                            <div className="panel">
                                <div className="panel-body">
                                    {/* 注册路由 */}
                                    <Route path='/about' component={About}/>
                                    <Route path='/Home' component={Home} />
                                </div>
                            </div>
                        </div>
                    </div>
            </div>
        );
    }
}
